Heat the oil over a medium heat. Add the onion and cook for a couple of minutes before adding the garlic and cooking for another 5 minutes. Add the turkey and cook until there's no pink left.
Add the sweet potato and all the spices to the pot and cook for another couple of minutes before adding the tomatoes and stock. Bring to a simmer and cook for 20 minutes until the sweet potatoes have softened.
Add the kidney beans and grated cheese and stir until the cheese has melted. Roll a spoonful of chilli in each tortilla. If keeping for another occasion wrap in foil and reheat in the oven when ready to eat. If eating straight away then serve topped with your choice of toppings.